Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDCA42 TJSJ 180853
CLIISX
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
453 AM AST TUE AUG 18 2026
...................................
...THE HENRY E. ROHLSEN AP/ST CROIX CLIMATE SUMMARY FOR AUGUST 17 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1951 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 91 1:52 PM 95 2020 90 1 89
2023
MINIMUM 80 6:26 AM 63 1978 78 2 77
AVERAGE 86 84 2 83
PRECIPITATION (IN)
YESTERDAY T 2.92 1978 0.11 -0.11 MM
MONTH TO DATE T 1.67 -1.67 0.00
SINCE JUN 1 0.11 6.23 -6.12 3.23
SINCE JAN 1 4.43 16.98 -12.55 3.30
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 0 0 0 0
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 21 18 3 18
MONTH TO DATE 227 306 -79 299
SINCE JUN 1 1363 1406 -43 1384
SINCE JAN 1 3582 3520 62 3608
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION E (100)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION SE (120)
AVERAGE WIND SPEED 10.7
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85
LOWEST 58
AVERAGE 72
..........................................................
THE HENRY E. ROHLSEN AP/ST CROIX CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 90 95 2020
MINIMUM TEMPERATURE (F) 78 72 1975
SUNRISE AND SUNSET
AUGUST 18 2026........SUNRISE 6:03 AM AST SUNSET 6:43 PM AST
AUGUST 19 2026........SUNRISE 6:03 AM AST SUNSET 6:43 PM AST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$